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Thank you letter by Elisabeth & Heinrich Meyn for a record sent by Hamburger
Season's greetings
Private letter
Greetings for Hamburger's 75th birthday by Heinrich & Elisabeth Meyn
Unknown author, probably Hamburger but no signature
On his upcoming visit to St. Louis.
On Hiroko Holtfreter's upcoming PNAS publication. On teaching experimental embryology lab. On the impossibility to understand self-organization, induction etc. in terms of current molecular biology.
On his first article on the action of an androgen administered prenatally on the patterns of behaviour displayed during adulthood. On his upcoming visit as guest lecturer at Hamburger's department at University of Washington.
Thank-you note regarding Holtfreter's recent visit at Hamburger's home.
On collecting salamander species. On his recent interdepartmental seminar lecture on Embryonic induction and cancer.
Handwritten letter, 1 page
Handwritten letter, 2 pages. Typewritten CV, 3 pages. Report form, 1 page